TW201711490A - Methods and apparatus for wireless discovery location and ranging within a neighborhood aware network - Google Patents

Abstract

Methods and apparatus for wireless communication in a peer-to-peer network are described herein. In one aspect, a method of wireless communication apparatus is provided. The method includes transmitting during a discovery window, by a first device, a first service discovery frame (SDF) or other action frame to a second device, the first SDF or other action frame comprising ranging information for performing a ranging protocol. The method further includes performing the ranging protocol, by the first device, in accordance with the ranging information.

Description

Method and apparatus for wireless discovery location and ranging within a neighborhood aware network

The present invention relates generally to wireless communications, and more particularly to systems, methods and apparatus for discovery and ranging in inter-level wireless networks.

In many telecommunication systems, communication networks are used to exchange messages between several spatially separated interactive devices. The network may be classified according to geographic extent, which may be, for example, a city area, a partial area, or a personal area. Such networks can be designated as wide area networks (WANs), metropolitan area networks (MANs), regional networks (LANs), wireless local area networks (WLANs), neighborhood aware networks (NANs), or personal area networks. Road (PAN). The network is also based on the switching/routing techniques used to interconnect various network nodes and devices (eg, circuit switching versus packet switching), the type of physical media used for transmission (eg, wired versus wireless), and the type of media used. Communication protocol sets (for example, Internet Protocol Suite, SONET (Synchronous Optical Networking), Ethernet, etc.) vary.

Wireless networks are often preferred when network elements are mobile and thus have dynamic connectivity requirements, or where the network architecture is formed in an ad hoc topology rather than a fixed topology. Wireless networks use electromagnetic waves in the frequency bands of radio, microwave, infrared, light, etc. to employ intangible physical media in a non-guided propagation mode. Wireless networks advantageously facilitate user mobility and rapid on-site deployment when compared to fixed wired networks.

Devices in a wireless network can transmit and/or receive information to and from each other. In order to perform various communications, each device can be coordinated according to an agreement. In this way, each device can exchange information to coordinate its activities. There is a need for improved systems, methods and apparatus for coordinating transmission and transmission communications in a wireless network.

The systems, methods, devices, and computer program products discussed herein each have several aspects, and not all of the single aspects are responsible for their desired attributes. Some features are briefly discussed below, without limiting the scope of the invention as expressed in the appended claims. After considering this discussion, and particularly after reading the section entitled "Implementation," it will be appreciated how advantageous features of the present invention include reduced power consumption when devices are introduced on the media.

One aspect of the present invention provides a method of wireless communication. The method includes transmitting, by the first device, a first service discovery frame (SDF) or other action frame to the second device during the discovery window, the first SDF or other action frame including ranging for performing the ranging protocol News. The method further includes performing, by the first device, a ranging protocol based on the ranging information.

Another aspect of the present invention provides a method of wireless communication. The method includes receiving, at a first device, a first service discovery frame (SDF) or other action frame from a second device during a discovery window, the first SDF or other action frame including ranging information. The method further includes transmitting, by the first device, a second SDF or other action frame to the first device in response to the first SDF or other action frame during the discovery window, the second SDF or other action frame including ranging information And an indication of a time period other than the discovery window for performing a ranging protocol based on the ranging information. The method further includes performing a ranging protocol during a time period indicated by the first device in the second SDF or other action frame.

Another aspect provides an apparatus configured to communicate wirelessly. The apparatus includes a transmitter configured to transmit a first service discovery frame (SDF) or other action frame to a second device during a discovery window, the first SDF or other action frame including for performing a ranging protocol Ranging information. The apparatus further includes a processor configured to perform a ranging protocol based on the ranging information.

Another aspect provides an apparatus configured to communicate wirelessly. The apparatus includes a receiver configured to receive a first service discovery frame (SDF) or other action frame from the second device during the discovery window, the first SDF or other action frame including ranging information. The apparatus includes a transmitter configured to transmit a second service discovery frame (SDF) or other action frame to the second device during the discovery window, the second SDF or other action frame including ranging information and discovery information An indication of a time period outside the window for performing a ranging protocol based on the ranging information. The apparatus includes a processor configured to perform a ranging protocol during a time period indicated by a second SDF or other action frame.

Another aspect provides another device for wireless communication. The apparatus includes means for transmitting, by the first device, a first service discovery frame (SDF) or other action frame to the second device during the discovery window, the first SDF or other action frame including for performing ranging The distance measurement information of the agreement. The apparatus further includes means for performing a ranging protocol during a time period indicated by the first device in the first SDF or other action frame.

Another aspect provides another device for wireless communication. The device includes means for receiving a first service discovery frame (SDF) or other action frame from the second device during the discovery window at the first device, the first SDF or other action frame including ranging information . The device further includes means for transmitting, by the first device, a second service discovery frame (SDF) or other action frame to the second device during the discovery window, the second SDF or other action frame including ranging information and An indication of a time period outside the window is found for performing a ranging protocol based on the ranging information. The apparatus further includes means for performing a ranging protocol during a time period indicated by the first device in the second SDF or other action frame.

Another aspect provides a non-transitory computer readable medium. The medium includes code that causes a device to perform a method when executed. The method includes transmitting, by the first device, a first service discovery frame (SDF) or other action frame to the second device during the discovery window, the first SDF or other action frame including ranging for performing the ranging protocol News. The method further includes performing, by the first device, a ranging protocol based on the ranging information.

Another aspect provides a non-transitory computer readable medium. The medium includes code that causes a device to perform a method when executed. The method includes receiving, at a first device, a first service discovery frame (SDF) or other action frame from a second device during a discovery window, the first SDF or other action frame including ranging information. The method further includes transmitting, by the first device, a second SDF or other action frame to the first device in response to the first SDF or other action frame during the discovery window, the second SDF or other action frame including ranging information And an indication of a time period other than the discovery window for performing a ranging protocol based on the ranging information. The method further includes performing a ranging protocol during a time period indicated by the first device in the second SDF or other action frame.

The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous. Various aspects of the novel systems, devices and methods are described more fully hereinafter with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and should not be construed as being limited to any specific structure or function. Rather, the aspects are provided so that this disclosure will be thorough and complete, and the scope of the invention will be fully conveyed by those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present invention is intended to cover any aspect of the novel systems, devices and methods disclosed herein, whether independently implemented or any other The combination of the aspects is implemented. For example, any number of aspects set forth herein can be used to implement an apparatus or a method of practice. In addition, the scope of the invention is intended to cover the use of a device or method that is practiced as a supplement or a different structure, functionality or structure and function of the various embodiments of the invention. It should be understood that any aspect disclosed herein can be implemented by one or more elements of the claim.

Although specific aspects are described herein, numerous variations and permutations of such aspects are within the scope of the present disclosure. Although some of the benefits and advantages of the preferred aspects are mentioned, the scope of the present invention is not intended to be limited to a particular benefit, use, or objective. Rather, the various aspects of the present invention are intended to be broadly applicable to different wireless technologies, system configurations, networks, and transmission protocols, some of which are illustrated by way of example in the drawings and the description of the preferred aspects. The detailed description and drawings are merely illustrative of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Popular wireless network technologies can include various types of wireless local area networks (WLANs). WLANs can be used to interconnect nearby devices with widely used networking protocols. The various aspects described herein can be applied to any communication standard, such as a wireless protocol.

In some implementations, a WLAN includes various devices that are components that access a wireless network. For example, there are two types of devices: an access point ("AP") and a client (also known as a station, or "STA"). In general, an AP can be used as a hub or base station for a WLAN, and a STA is used as a user of a WLAN. For example, the STA can be a laptop, a personal digital assistant (PDA), a mobile phone, and the like. In an example, the STA connects to the AP via a wireless link that follows WiFi (eg, IEEE 802.11 protocol) to obtain general connectivity to the Internet or to other wide area networks. In some implementations, the STA can also be used as an AP.

An access point ("AP") may also be implemented, or referred to as a Node B, a Radio Network Controller ("RNC"), an evolved Node B, a Base Station Controller ("BSC"), and a base transceiver. Station ("BTS"), base station ("BS"), transceiver function ("TF"), radio router, radio transceiver or some other terminology.

The station "STA" may also be implemented, or referred to as an access terminal ("AT"), a subscriber station, a subscriber unit, a mobile station, a remote station, a remote terminal, a user terminal, a user agent, User device, node, user equipment, or some other terminology. In some implementations, the access terminal can include a cellular telephone, a wireless telephone, a Session Initiation Protocol ("SIP") telephone, a Wireless Area Loop ("WLL") station, a Personal Digital Assistant ("PDA"), and wireless connectivity. A handheld device, or some other suitable processing device or wireless device connected to a wireless data modem. Thus, one or more aspects taught herein can be incorporated into a telephone (eg, a cellular or smart phone), a computer (eg, a laptop), a portable communication device, a headset Portable computing device (eg, personal data assistant), entertainment device (eg, music or video device, or satellite radio), gaming device or system, global positioning system device, or any other suitable device configured to communicate via wireless media In the device.

Devices, such as a group of stations, for example, can be used for neighborhood aware networking, or social WiFi networking. For example, stations within a network can communicate with each other for applications supported by each station based on device-to-device (eg, peer-to-peer communication). Wireless network technologies for social WiFi networking may include various types of WLANs and near-field (or near-area) networks (NANs). NAN can be used to connect nearby devices together using a specific networking protocol. The wireless devices in the NAN may belong to different proprietary network infrastructures (eg, different mobile carriers). Therefore, even if the two devices are geographically close, the communication path between them may actually span a long distance from one LAN to the other via the Internet. NAN applications focus on two-way communication between people within a specific proximity of each other, but generally do not care about the exact location of their people. Some services only make sense for very close people, which creates a need for NAN. Some non-limiting examples of NAN use are illustrated in the following scenarios: l Allie is going to the supermarket to buy three bottles of red wine. The supermarket offers a 30% discount on the purchase of six bottles, so she sends a message to other customers to see if they want to buy another three bottles. l Elissa bought a movie ticket 15 minutes ago, but now she feels dizzy and can't watch a movie. She sends a message to people around the cinema to see if anyone will buy her ticket at half price. l In theme parks, visitors want to know the queue status of each item to reduce their waiting time. So, they took pictures of their team and shared them with other visitors via the NAN app. l Marcy works at Del Mar and wants to find someone to have lunch. She browses her list of friends to see who is closest to her at the moment and invites her friends to join her. l Paige has just been separated from her son on the street, so she sends his photo of her mobile device to nearby passers-by to see if they can find him. Katie (far a half block from Paige) found Paige's son using the photos she received on her smart phone and contacted Paige to tell her where to find him.

Accordingly, discovery protocols used in social Wi-Fi networks may be desirable to enable STAs to advertise themselves (eg, via sending discovery packets or messages) and to discover services provided by other STAs (eg, via sending a pager or query packet) Or message) while ensuring secure communication and/or low power consumption. Further, it may be desirable for the discovery protocol to enable the STA to transmit service specific information (eg, ticket information, photos, etc.) to other STAs.

One or more STAs or nodes of the NAN may transmit synchronization messages to coordinate one or more availability windows for communication between nodes of the peer network. The nodes may also exchange discovery queries and responses to provide service discovery between devices operating within the same peer or neighbor aware network. In some aspects, a NAN can be considered a peer-to-peer network or an ad hoc network.

In some embodiments, only a subset of nodes can be configured to transmit synchronization messages, for example to reduce network congestion. In some embodiments, a subset of nodes may be designated or selected as a "master" node. For example, a node that can access an external power source can be selected as a master node, while a node that operates on battery power may not be selected as a master node. In various embodiments, one or more different types that may be designated as master nodes include: a discovery master node, a synchronization master node, and/or an anchor master node.

In some embodiments, one or more discovery master nodes may transmit NAN discovery messages, while other nodes may not transmit NAN discovery messages. For example, the discovery master node can be configured to transmit beacons outside of the discovery window. In some embodiments, one or more synchronization master nodes may transmit synchronization messages while other nodes may not transmit synchronization messages. For example, the sync master node can be configured to transmit beacons within the discovery window.

In some embodiments, one or more anchor master nodes may be preferentially selected as a sync master node and/or a discovery master node. The anchor node can be preset, generally selected as described herein with respect to master node selection, or otherwise determined. A NAN with an anchor node may be referred to as an anchor NAN, while a NAN without an anchor node may be referred to as a non-anchor NAN.

FIG. 1 illustrates an example of a wireless communication system 100 in which various aspects of the present invention may be employed. Wireless communication system 100 can operate in accordance with wireless standards, such as the 802.11 standard. Wireless communication system 100 can include an AP 104 in communication with STAs 106. In some aspects, wireless communication system 100 can include more than one AP. Additionally, STA 106 can communicate with other STAs 106. As an example, the first STA 106a can communicate with the second STA 106b. As another example, the first STA 106a can communicate with the third STA 106c, although this communication link is not illustrated in FIG.

Various processes and methods can be used for transmission between the AP 104 and the STA 106 in the wireless communication system 100 and between an individual STA (such as the first STA 106a) and another body STA (such as the second STA 106b). For example, signals can be transmitted and received according to OFDM/OFDMA techniques. If this is the case, the wireless communication system 100 can be referred to as an OFDM/OFDMA system. Alternatively, signals may be transmitted and received between the AP 104 and the STA 106 and between an individual STA (such as the first STA 106a) and another body STA (such as the second STA 106b or STA 106e). In some implementations, communication between STAs is based on CDMA technology. If this is the case, the wireless communication system 100 can be referred to as a CDMA system.

A communication link that facilitates transmissions from the AP 104 to one or more STAs 106 may be referred to as a downlink (DL) 108, while a communication link that facilitates transmissions from one or more STAs 106 to APs 104 may be referred to as For the uplink (UL) 110. Alternatively, downlink 108 may be referred to as a forward link or a forward channel, and uplink 110 may be referred to as a reverse link or a reverse channel.

Communication links can be established between STAs, such as during social Wi-Fi networking. Some possible communication links between STAs are illustrated in FIG. As an example, communication link 112 may facilitate transmission from first STA 106a to second STA 106b. Another communication link 114 can facilitate transmission from the second STA 106b to the first STA 106a.

The AP 104 can act as a base station and provide wireless communication coverage in the Basic Service Area (BSA) 102. The AP 104, along with the STAs 106 associated with the AP 104 and communicating using the AP 104, may be referred to as a Basic Service Set (BSS). It should be noted that the wireless communication system 100 may not have the central AP 104, but may function as an inter-network between the STAs 106. Accordingly, the functionality of the AP 104 described herein may alternatively be performed by one or more STAs 106. In some embodiments, wireless communication system 100 can include a NAN.

FIG. 2 illustrates various components that may be utilized in wireless device 202 that may be employed within wireless communication system 100. Wireless device 202 is an example of a device that can be configured to implement the various methods described herein. For example, wireless device 202 can include AP 104 or one of each STA 106.

Wireless device 202 can include a processor 204 that controls the operation of wireless device 202. Processor 204 may also be referred to as a central processing unit (CPU). Memory 206, which may include both read-only memory (ROM) and random access memory (RAM), may provide instructions and data to processor 204. A portion of the memory 206 may also include non-volatile random access memory (NVRAM). The processor 204 typically performs logical and arithmetic operations based on program instructions stored within the memory 206. The instructions in memory 206 may be executable to implement the methods described herein. The processor 204 can be configured to execute an application, such as a social gaming application or other application facilitated by the use of near field network or neighborhood aware network (NAN) communication.

Processor 204 may include a processing system implemented with one or more processors or may be an element thereof. The one or more processors can use general purpose microprocessors, microcontrollers, digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), controllers, state machines , strobe logic, individual hardware components, dedicated hardware finite state machines, or any combination of any other suitable entity capable of performing calculations or other manipulations of information.

The processing system can also include machine readable media for storing software. Software should be interpreted broadly to mean any type of instruction, whether it be called software, firmware, mediation software, microcode, hardware description language, or others. Instructions may include code (eg, in raw code format, binary code format, executable code format, or any other suitable code format). The instructions, when executed by the one or more processors, cause the processing system to perform the various functions described herein.

The wireless device 202 can also include a housing 208 that can include a transmitter 210 and/or a receiver 212 to allow for the transfer and reception of data between the wireless device 202 and a remote location. Transmitter 210 and receiver 212 can be combined into transceiver 214. Antenna 216 can be attached to housing 208 and electrically coupled to transceiver 214. Wireless device 202 can also include (not shown) multiple transmitters, multiple receivers, multiple transceivers, and/or multiple antennas.

Transmitter 210 can be configured to wirelessly transmit packets having different packet types or functions. For example, transmitter 210 can be configured to transmit different types of packets generated by processor 204. When the wireless device 202 is implemented or used as the AP 104 or the STA 106, the processor 204 can be configured to process a plurality of packets of different packet types. For example, processor 204 can be configured to determine the type of packet and process the packet and/or the field of the packet accordingly. When the wireless device 202 is implemented or used as the AP 104, the processor 204 can also be configured to select and generate one of a plurality of packet types. For example, processor 204 can be configured to generate a discovery packet that includes a discovery message and decide what type of packet information to use in a particular instance.

Receiver 212 can be configured to wirelessly receive packets having different packet types. In some aspects, receiver 212 can be configured to detect the type of packet used and process the packet accordingly.

The wireless device 202 can also include a signal detector 218 that can be used to attempt to detect and quantize the level of signals received by the transceiver 214. Signal detector 218 can detect signals such as total energy, energy per symbol per symbol, power spectral density, and other signals. Wireless device 202 can also include a digital signal processor (DSP) 220 for processing signals. The DSP 220 can be configured to generate a packet for transmission. In some aspects, the packet can include a physical layer data unit (PPDU).

In some aspects, the wireless device 202 can further include a user interface 222. User interface 222 can include a keypad, a microphone, a speaker, and/or a display. User interface 222 can include any element or element that conveys information to and/or receives input from a user of wireless device 202.

Wireless device 202 can further include discovery engine 230. One or more other elements of device 202 may be coupled to discovery engine 230 and in communication with discovery engine 230. In operation, discovery engine 230 can provide information to applications executing on processor 204 (or device 202). The information may include a service identifier for identifying a service provided by the first device, an instance identifier for identifying an instance of the published service or an instance of the service on the particular device, and for identifying an SDF or other trigger The requestor instance identifier of the instance of the transmitted frame of the action frame. An exemplary action frame is a NAN Action Frame (NAF). Subtypes of NAF include ranging request, ranging response, ranging termination, ranging report, data path request, data path response, data path confirmation, data path key installation, scheduling request, schedule response, schedule confirmation And schedule update notifications. The discovery engine 230 can be configured to use at least a portion of the information to facilitate communication for the application (or device 202), for example, with one or more nearby devices that define (and join) a near field network (NAN) Communication.

The various components of wireless device 202 can be coupled together by busbar system 226. The busbar system 226 can include, for example, a data bus, and a power bus, a control signal bus, and a status signal bus in addition to the data bus. The elements of wireless device 202 can be coupled together or accept each other or provide input using some other mechanism.

Although several separate elements are illustrated in FIG. 2, one or more of the elements may be combined or implemented in common. For example, processor 204 can be used to implement not only the functionality described above with respect to processor 204, but also the functionality described above with respect to signal detector 218 and/or DSP 220. Additionally, each of the elements illustrated in Figure 2 can be implemented using a plurality of separate elements.

3 is an exemplary communication isochronogram of a wireless communication system illustrating an exemplary discovery window structure for a STA to discover a NAN in accordance with an exemplary implementation described herein. The exemplary discovery window structure 300 can include a discovery window (DW) 302 of duration 304 and a total discovery period (DP) 306 interval of duration 308. The exemplary discovery window structure 300 can also include a beacon 310 that includes some NAN information (eg, time synchronization) sent from an anchor or a master STA or node in the NAN. In some aspects, communication can also occur via other channels. Time increases horizontally across the page on the timeline.

During DW 302, the STA can advertise services via broadcast messages, such as discovery packets or discovery frames. The STA can listen to broadcast messages transmitted by other STAs. In some aspects, the duration of the DW can vary over time. In other aspects, the duration of the DW can remain fixed for a period of time. As illustrated in Figure 3, the end of DW 302 can be separated from the beginning of the subsequent DW for a first remaining time period.

As illustrated in FIG. 3, the total interval of duration 308 can measure the time period from the beginning of one DW to the beginning of the subsequent DW. In some embodiments, duration 308 may be referred to as discovery period (DP) 306. In some aspects, the duration of the total interval may vary over time. In other aspects, the duration of the total interval may remain constant over a period of time. At the end of the total interval of duration 308, another total interval can begin, including DW and the remaining interval. Successive total intervals can be infinitely successive or continue for a fixed period of time. The STA may enter a sleep or power save mode when the STA is not transmitting or listening or is not expected to transmit or listen.

The discovery query is transmitted during DW 302. The STA's response to the transmitted discovery query is transmitted during DP 306. As explained below, the time allocated for transmitting a response to the transmitted probe or discovery query may, for example, overlap with the time allocated for transmitting the discovery query, and the assigned time for transmitting the discovery query. The time is adjacent, or at some time after the end of the allocated time for transmitting the discovery query.

FIG. 4 illustrates an exemplary transmission 400 of one or more Service Discovery Frames (SDFs) or other action frames, in accordance with an exemplary embodiment. As illustrated, transmission 400 includes transmissions of SDF 402 and SDF 404. As before, the transmission 400 can be between (or in) between devices within the NAN. In some aspects, SDF 402 and SDF 404 may be transmitted by STA 106 during different discovery periods (DP) or the same DP (such as DP 306 of FIG. 3). As illustrated, the SDF 402 includes a Ranging Setup Attribute (RSA) 408. Further, as illustrated, the SDF 404 includes an RSA 410. SDF 402 and SDF 404 may include other information, such as other attributes, as previously described, including additional RSAs for the same or other applications or services. In some aspects, RSA 408 or 410 can indicate an agreement for determining ranging between two devices.

In some aspects, RSA 408 and 410 can be transmitted in accordance with the format illustrated in FIG. FIG. 5 illustrates an exemplary format 500 of a ranging setup attribute (RSA), in accordance with an exemplary embodiment. As illustrated, RSA 500 includes various fields including attribute identifier field 502, length field 504, media access control (MAC) address field 506, mapping control field 508, and ranging control field. 510. Fine time measurement (FTM) parameter field 512 and availability interval bit mapping field 516. RSA 500 may include other fields not described herein. A discovery engine, such as discovery engine 230 of FIG. 2, can be used to obtain or determine the content of various fields of RSA 500, as described herein. In conjunction with the chart 415 of FIG. 4, the attribute identifier field 502 can be one octet in length and can identify the type of NAN attribute. In one aspect, the attribute identifier field 502 can indicate that the attribute is a ranging setup attribute or RSA. The length field 504 can be two octets in length and can indicate the length of subsequent fields in an attribute (eg, RSA 500). The length of the MAC address field 506 can be six octets and can indicate the device MAC address used to perform the ranging protocol. The mapping control field 508 can be one octet in length and can include an indication of the availability of channel and time map control information.

The length of the ranging control field 510 can be an octet and can indicate a wide variety of ranging parameters. For example, FIG. 6 illustrates an exemplary format of the ranging control field 600. As illustrated, the ranging control field 600 includes an availability mapping field 601, an initiator/responder field 602, a confirmation/failure field 603, and a reserved field 604. In some aspects, the availability map field 601 can indicate whether there is an availability interval bit map, and the initiator/responder field 602 can indicate whether the device transmitting the RSA including the ranging control field 600 is an initiator or a responder. For example, if a bit is set, it can indicate that the device is the initiator. In some aspects, the confirmation/failure field 603 can indicate the status of the ranging agreement. For example, the acknowledgment/failure field 603 may include two digits, and a value of 00 may indicate that a negotiation process between two devices is in progress, a value of 01 may confirm that the negotiation was successful, a value of 10 may indicate that the negotiation failed, and a value of 11 may be retained. For future use. In some embodiments, the ranging control field 510 can include the format of the ranging control field 600.

Referring back to Figure 5, the Fine Time Measurement (FTM) parameter field 512 can be 9 octets in length and can indicate a wide variety of FTM parameters. For example, FIG. 7 illustrates an exemplary format of the FTM parameter field 700. In some aspects, the FTM parameter field 700 can be structured as an FTM parameter element. As shown, the FTM parameter field 700 includes a status indication field 701, a value field 702, a reserved field 703, a short pulse number index field 704, a short pulse duration field 705, a minimum ΔFTM field 706, and a portion. Time Synchronization Function (TSF) timer field 707, second reserved field 708, as soon as possible (ASAP) capability field 709, ASAP field 710, per short pulse FTM field 711, third reserved field 712, FTM format And the bandwidth field 713 and the short pulse period field 714. In some embodiments, some fields of the FTM parameter field 711 may indicate the operation of the ranging protocol discussed herein. For example, in some aspects, the status indication field 701 can be set to 0 to indicate that the device is the initiator and is set to 1 to indicate that the device is the responder, or vice versa. In this embodiment, the value field 702 can be set to 0, the short pulse number index field 704 can be set to 0, and the ASAP capability field 709 can be set to 0 by the initiator and set to 1 by the responder, ASAP column. Bit 710 can be set to 1, and short pulse period field 714 can be set to zero, indicating the operation of the ranging protocol. The values set in these fields of the FTM may have certain advantages over the ranging protocol. For example, an ASAP value set to 1 can be a valid message because it includes a single initial FTM request (iFTMR) message followed by a measurement. The short pulse number index field set to 0 indicates a single short pulse configuration that does not require coordination of short pulse periods. Additionally, this value may allow the ranging protocol to be accommodated within the NAN paradigm where the schedule is remitted from the NAN timing and the existing protocol is executed in the time block provided by the NAN. The agreement also allows the use of the existing FTM mode without any modifications. Other fields of the FTM parameter field 700 may be set according to their functionality as predefined or as defined in an IEEE based standard.

In some embodiments, the length of the FTM parameter field 512 can be reduced to 3 octets and include various FTM parameters. FIG. 8 illustrates a chart 800 showing different fields of RSA (eg, RSA 408 and 410), including their size, value, and brief description. The chart 800 is similar to and adapted to the chart 415 of Figure 4, and for the sake of brevity only the differences between the chart 415 and the chart 800 are described herein. In chart 800, FTM parameter field 512 has a size of 3 octets, in contrast to the 9 octets indicated in chart 415. FIG. 9 illustrates an exemplary format of the FTM parameter field 900. As shown, the FTM parameter field 900 includes a short pulse duration field 905, a minimum ΔFTM field 906, a short burst FTM field 911, an FTM format and bandwidth field 913, and a reserved field 915. In some embodiments, some of the fields of the FTM parameter field 900 may indicate the operation of the ranging protocol discussed herein. In some aspects, each field of the FTM parameter field 900 is a field of the same name according to the FTM parameter field 700 to indicate a ranging agreement. In some aspects, the short pulse duration field 905 (and 705) indicates the maximum time of the short pulse, and the minimum ΔFTM field 906 (and 706) indicates between the two FTM frames used for the measurement in the short pulse. Time, each short pulse FTM field 911 (and 711) indicates the number of measurement frames sent in the short burst, and the FTM format and bandwidth field 913 indicates the physical (PHY) layer frame for the FTM measurement frame. Type and bandwidth.

In some embodiments, the ranging control field 510 size can be increased to a length of 2 octets to carry additional information. FIG. 10 illustrates a chart 1000 showing different fields of RSA (eg, RSA 408 and 410), including their size, value, and brief description. The chart 1000 is similar to and adapted to the chart 800 of Figure 8, and for the sake of brevity only the differences between the chart 800 and the chart 1000 are described herein. In chart 1000, ranging control field 510 has a size of 2 octets, in contrast to the 1 octet indicated in chart 800. As shown in diagram 1000, RSA 408 of FIG. 4 may also include a service mapping field 1015 and a last mobile indication field 1020. Service mapping field 1015 has a size of one octet. When there is a service mapping field 1015, it can be used to indicate that the nth bit is set, which indicates that the ranging is in the nth service discovery attribute (SDA) listed in the Service Discovery Frame (SDF). The service is mandatory. When there is no service mapping field 1015, its absence may indicate that the device requests ranging is service independent (eg, without any service). The last move indication field 1020 may have a size of 2 octets and may be used to indicate the value of the last detected platform move time synchronization function (TSF). If the last move indication field 1104 (discussed below) of FIG. 11 is set to 1, then the last move indication field 1020 may exist.

FIG. 11 illustrates an exemplary format of the ranging control field 1100. The ranging control field 1100 is similar to and adapted to the ranging control field 600 of FIG. 6, and for the sake of brevity only the differences between the ranging control field 600 and the ranging control field 1100 are described herein. As shown, the ranging control field 1100 includes a service mapping presence field 1101, a last mobile indication presence field 1104, an initiator ranging report field 1105, a positioning connectivity information (LCI) local field 1106, and an LCI. Geospatial field 1107, city location field 1108, ranging result capability field 1109, and reserved field 1110. In some embodiments, the service map presence field 1101 can include a bit and indicate whether a service map field 1015 is present. In some embodiments, the last move indication presence field 1104 can include a one-bit element and indicate whether there is a last move indication field 1020. In some embodiments, the originator ranging report field 1105 can include a bit and indicate that the ranging result is requested by the responder if the originating ranging report field 1105 is set to 1 by the FTM responder. If the initiator ranging report field 1105 is set to 1 by the FTM initiator, the ranging result will be transmitted to the responding party upon completion of each FTM communication period (ie, each single block). In some aspects, the LCI local field 1106 can include a bit and indicate whether the STA has a local coordinate available (LCI local coordinates). In some aspects, the LCI geospatial field 1107 can include a bit and indicate whether the STA has a geospatial location coordinate available (geographic space LCI WGS84). In some aspects, the city location field 1108 can include a bit and indicate whether the STA has city location capabilities (city location). In some aspects, the ranging result capability field 1109 can include a bit and indicate whether the device is capable of providing ranging results or ranging to other devices. In some aspects, reserved field 1110 can include five bits.

FIG. 12A illustrates an exemplary dialing flow 1200 implementing a ranging protocol in accordance with embodiments described herein. In FIG. 12A, NAN STA1 and NAN STA2 exchange various communications to determine ranging between the two devices. In some aspects, during a discovery window of the discovery period (eg, DP 306) (eg, DW 302 of FIG. 3), NAN STA1 transmits a Service Discovery Frame (SDF) 1202 to NAN STA2 (eg, SDF 402) . In some aspects, NAN STA1 may further transmit SDF 1202 during the service discovery window. The SDF 1202 includes ranging capabilities/requirements, availability times, and/or bandwidth information. For example, SDF 1202 can include an RSA (e.g., RSA 408) that indicates an agreement for determining ranging between two devices. The RSA may include a ranging control field (eg, ranging control fields 510, 600) and an FTM parameter field (eg, FTM parameter fields 512, 700, and/or 900) for including information about the ranging protocol described above. Ranging information.

For example, in conjunction with FIGS. 4-6, the configuration of the ranging control field of the SDF 1202 can be as follows: the availability mapping field 601 indicates the presence of an availability interval bit map (eg, set to 1), and the initiator/responder field 602 indicates NAN STA1 is the initiator (eg, set to 1), and the acknowledgment/failure field 603 indicates that negotiation between NAN STA1 and NAN STA2 is ongoing (eg, set to 00). The availability interval bit map field 516 will indicate a time period or time slot within the NAN DP (eg, DP 306) and DW (eg, DW 302) for the device to initiate the FTM agreement for ranging. Additionally, and in conjunction with Figures 4 and 7, the FTM format and bandwidth field 713 of the FTM parameter field of the SDF 1202 may indicate the bandwidth used to perform the FTM protocol. The FTM parameter field of SDF 1202 may also include other parameters discussed above. In some aspects, the SDF 1202 can be transmitted as a broadcast message.

In response to SDF 1202, NAN STA2 can transmit SDF 1204. The SDF 1204 may include the same availability time, ranging capability/requirements, and/or bandwidth selection as indicated in the SDF 1202, or it may include selection of one or more different parameters. The SDF 1204 may also include an acknowledgment indicating receipt of the SDF 1202 and/or confirmation of the parameters indicated in the SDF 1202 (eg, the indicated ranging information and the indicated time period). In some embodiments, the ranging FTM agreement occurs during a time period or time slot indicated in the availability interval bit map field 516 included in the SDF 1204 or SDF 1202. In some aspects, the responding STA (eg, NAN STA2) in the DW becomes the initiator STA during the ranging FTM protocol that occurs during NAN DP. As shown in Figure 12A, ranging FTM protocol measurements 1206, 1208, 1210 occur multiple times during NAN DP. In some embodiments, the ranging FTM protocol may include an FTM defined in an 802.11 based standard.

FIG. 12B illustrates an exemplary dialing flow 1250 implementing a fine timing measurement (FTM) protocol in accordance with embodiments described herein. In some aspects, ranging FTM protocol measurements 1206, 1208, 1210 include dialing flow 1250. In some embodiments, the example dialing flow 1250 occurs during a time period indicated in the availability interval bit map field 516 included in the SDF 1202 and/or the SDF 1204. As shown, the originating STA (e.g., NAN STA2 of FIG. 12A) sends an initial FTM request (iFTMR) message 1251 to the responding STA (e.g., NAN STA1 of FIG. 12A). In response, the responding STA transmits an acknowledgement (ACK) message 1252 to the originating STA. The responding STA can then initiate the FTM and send a series of FTM measurements. The number of measurements, the time between measurements, the duration of the measurements, and other FTM parameters can be defined in the FTM parameter field 512, 700, or 900, as previously described. As shown in Figure 12B, the STA exchanges a total of three FTM/ACK message exchanges (e.g., messages 1253-1258). In some embodiments, FTM protocol measurement 1206 corresponds to messages 1253 and 1254, FTM protocol measurement 1208 corresponds to messages 1255 and 1256, and FTM protocol measurement 1206 corresponds to messages 1257 and 1258. Based on the messages exchanged in the dialed flow 1250, the originating STA may calculate a round trip time (RTT) or clock offset estimate to determine the ranging between the originating STA and the responding STA.

FIG. 13 illustrates an exemplary dialing flow 1300 that implements a ranging protocol in accordance with embodiments described herein. In Figure 13, NAN STA1 and NAN STA2 exchange various communications to determine the ranging between the two devices. In some aspects, during a discovery window of the discovery period (eg, DP 306) (eg, DW 302 of FIG. 3), NAN STA1 transmits a Service Discovery Frame (SDF) 1302 to NAN STA2 (eg, SDF 402). . In some aspects, NAN STA1 may further transmit SDF 1302 during the service discovery window. The SDF 1302 includes ranging capability/requirements and/or bandwidth information. For example, SDF 1302 can include a Ranging Setup Attribute (RSA) (eg, RSA 408) that indicates an agreement for determining ranging between two devices. The RSA may include a ranging control field (eg, ranging control fields 510, 600) and an FTM parameter field (eg, FTM parameter fields 512, 700, and/or 900) for including information about the ranging protocol described above. News.

In response to SDF 1302, NAN STA2 may transmit SDF 1304. The SDF 1304 can include availability time, ranging capability/requirements, and/or bandwidth for ranging as indicated in the SDF 1302, or it can include selection of one or more different parameters. The SDF 1304 can also include an acknowledgment indicating receipt of the SDF 1302 and/or confirmation of the parameters indicated in the SDF 1302. In some embodiments, the ranging FTM agreement occurs during a time slot indicated in the availability interval bit map field 516 included in the SDF 1304. The NAN STA1 then transmits the SDF 1306 to confirm the availability time indicated for the ranging in the SDF 1304. In some aspects, the availability time in SDF 1306 includes a subset of the availability times indicated in SDF 1304.

Figure 13 also illustrates FTM protocol measurements 1308, 1310, 1312 occurring during NAN DP outside of DW. In some aspects, the responding STA (eg, NAN STA2) in the DW becomes the initiator STA during the ranging FTM protocol that occurs during NAN DP. As shown in Figure 13, the ranging FTM protocol measurements 1308, 1310, 1312 occur multiple times during NAN DP. In some embodiments, the ranging FTM protocol may include an FTM defined in an 802.11 based standard. In some aspects, the ranging FTM protocol measurements 1308, 1310, 1312 include the same dialing as the ranging FTM protocol measurements 1206, 1208, 1210 (eg, messages 1253-1258) illustrated in Figures 12A and 12B. Stream and message exchange.

FIG. 14 illustrates a flowchart 1400 of a method of wireless communication in accordance with an embodiment described herein. The method may be implemented in whole or in part by the devices described herein, such as the wireless device 202 shown in FIG. 2, or any of the STAs 106a-106d shown in FIG. Although the illustrated method is described herein with reference to the wireless communication system 100 discussed above with respect to FIG. 1 and the wireless device 202 discussed above with respect to FIG. 2, one of ordinary skill in the art will appreciate that the illustrated method This can be accomplished by another device described herein or by any other suitable device. Although the illustrated methods are described herein with reference to a particular order, in various embodiments, the various blocks herein may be performed in a different order, or omitted, and additional blocks may be added. Moreover, although the method of flowchart 1400 is described herein with reference to a service discovery frame, the method is applicable to any type of NAN frame, including, for example, synchronous beacons and cluster discovery beacons.

First, at block 1402, the device (e.g., NAN STA1 of FIG. 12A) transmits a service discovery frame (SDF 1202) during the discovery window. The SDF may include ranging information and an indication of a time period other than the discovery window for performing a ranging protocol based on the ranging information. Next, at block 1404, the device performs a ranging protocol during the time period indicated in the SDF.

In some embodiments, a device can perform the functions of method 1400. The device can include means for generating a service discovery frame (SDF 1202) or other action frame. The SDF may include ranging capability/requirements, availability time, and/or bandwidth information. In some aspects, the means for generating can be implemented by processor 204, DSP 220, or discovery engine 230 of FIG. The apparatus can further include means for transporting the SDF. In some embodiments, the means for transmitting can be implemented by transceiver 214 (FIG. 2) or by transmitter 210 (FIG. 2). The apparatus can further include means for performing a ranging protocol during an availability time indicated by the SDF. In some embodiments, the means for performing may be implemented by processor 204, DSP 220, discovery engine 230, transceiver 214, transmitter 210, and/or receiver 212 of FIG. In some embodiments, the ranging protocol may include an FTM protocol defined in an 802.11 based standard. In some aspects, the ranging agreement can include the dialing flow 1050 of Figure 10B.

FIG. 15 illustrates a flowchart 1500 of a method of wireless communication in accordance with embodiments described herein. The method may be implemented in whole or in part by the devices described herein, such as the wireless device 202 shown in FIG. 2, or any of the STAs 106a-106d shown in FIG. Although the illustrated method is described herein with reference to the wireless communication system 100 discussed above with respect to FIG. 1 and the wireless device 202 discussed above with respect to FIG. 2, one of ordinary skill in the art will appreciate that the illustrated method This can be accomplished by another device described herein or by any other suitable device. Although the illustrated methods are described herein with reference to a particular order, in various embodiments, the various blocks herein may be performed in a different order, or omitted, and additional blocks may be added. Moreover, although the method of flowchart 1400 is described herein with reference to a service discovery frame, the method is applicable to any type of NAN frame, including, for example, synchronous beacons and cluster discovery beacons.

First, at block 1502, the device (e.g., NAN STA2 of Figure 12A) receives a first service discovery frame (SDF 1202) or other action frame during the discovery window. The first SDF can include ranging information. Next, at block 1504, the device transmits the second SDF in response to the first SDF during the discovery window. The second SDF may include ranging information and an indication of a time period other than the discovery window for performing a ranging protocol based on the ranging information. Subsequently, at block 1506, the device performs a ranging protocol during the time period indicated by the second SDF.

In some embodiments, a device can perform the functions of method 1500. The device can include means for receiving a first service discovery frame (SDF 1002). The SDF or other action frame may include ranging capability/requirements, availability time, and/or bandwidth information. In some aspects, the means for receiving can be implemented by transceiver 214 and/or receiver 212 of FIG. The apparatus can further include means for communicating the second SDF. The second SDF may include ranging capability/requirements, availability time, and/or bandwidth information. In some embodiments, the means for transmitting can be implemented by transceiver 214 (FIG. 2) or by transmitter 210 (FIG. 2). The apparatus can further include means for performing a ranging protocol during an availability time indicated by the SDF. In some embodiments, the means for performing may be implemented by processor 204, DSP 220, discovery engine 230, transceiver 214, transmitter 210, and/or receiver 212 of FIG.

It should be understood that any reference to an element such as "first", "second", etc., as used herein, generally does not limit the number or order of the elements. Rather, such designations may be used herein as a convenient wireless device that distinguishes two or more elements or instances of the elements. Thus, the recitation of the first element and the second element does not mean that only two elements may be employed herein or that the first element must be bitwise before the second element in some manner. Additionally, a collection of elements may include one or more elements unless otherwise stated.

One of ordinary skill in the art will appreciate that information and signals can be represented using any of a wide variety of different techniques and techniques. For example, the materials, instructions, commands, information, signals, bits (bits), symbols, and chips that may be referred to throughout the above description may be voltage, current, electromagnetic waves, magnetic or magnetic particles, light fields or light particles or Any combination of them is indicated.

One of ordinary skill in the art will further appreciate that any of the various illustrative logical blocks, modules, processors, components, circuits, and algorithm steps described in connection with the aspects disclosed herein can be implemented as an electronic hard Body (for example, a digital implementation, an analog implementation, or a combination of the two, which can be designed using source coding or some other technique), various forms of programming or design code that incorporate instructions (for the sake of simplicity, in this article) It may be called "software" or "software module", or a combination of the two. To clearly illustrate this interchangeability of hardware and software, various illustrative elements, blocks, modules, circuits, and steps have been described above generally in the form of their functionality. Whether such functionality is implemented as hardware or software depends on the particular application and design constraints imposed on the overall system. The described functionality may be implemented in a different manner for each particular application, but such implementation decisions are not to be interpreted as a departure from the scope of the invention.

The various illustrative logical blocks, modules, and circuits described in connection with the various aspects of the text and described in connection with Figures 1-15 can be implemented in or executed by integrated circuits (ICs), access terminals or access points. . An IC may include a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device designed to perform the functions described herein. Individual gate or transistor logic, individual hardware components, electronic components, optical components, mechanical components, or any combination thereof, and may execute code or instructions resident within the IC, external to the IC, or both. The logic blocks, modules and circuits may include antennas and/or transceivers to communicate with various components within the network or within the device. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any general processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. The functionality of the modules can be implemented in some other manner as taught herein. The functionality described herein (e.g., with respect to one or more figures) may correspond in some aspects to a similarly named "mechanical component" in the accompanying claims.

If implemented in software, the functions can be stored on or transmitted as computer readable media as one or more instructions or codes. The steps of the methods or algorithms disclosed herein may be implemented in a processor executable software module that may reside on a computer readable medium. Computer readable media includes both computer storage media and communication media, including any media that can be implemented to transfer a computer program from one location to another. The storage medium can be any available media that can be accessed by the computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or can be used to store instructions or data structures. Any other medium that expects code and can be accessed by a computer. Any connection can also be properly referred to as computer readable media. Disks and discs as used herein include compact discs (CDs), laser discs, compact discs, digital versatile discs (DVDs), floppy discs, and Blu-ray discs, where the discs are often magnetic. The data is reproduced in a manner and the disc is optically reproduced by laser. Combinations of the above should also be included in the scope of computer readable media. In addition, the operations of the method or algorithm may reside as one of code and instructions or any combination or combination of code and instructions resident on machine readable media and computer readable media that can be incorporated into a computer program product.

It should be understood that any particular order or hierarchy of steps in any disclosed process is an example of an exemplary method. Based on design preferences, it is understood that the specific order or hierarchy of steps in the processes can be rearranged and still be within the scope of the present disclosure. The appended method claims present elements of the various steps in the exemplary order and are not intended to be limited to the specific order or hierarchy.

Various modifications to the implementations described in this disclosure are obvious to those skilled in the art, and the generic principles defined herein may be applied to other implementations without departing from the spirit or scope of the invention. Therefore, the present invention is not intended to be limited to the implementations shown herein, but the scope of the invention is to be accorded to the scope of the invention, the principles and novel features disclosed herein. The word "exemplary" is used exclusively herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

Certain features that are described in this specification in the context of separate implementations can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can be implemented in a plurality of implementations separately or in any suitable subcombination. Moreover, although the features may be described above as acting in some combination and even so initially claimed, one or more features from the claimed combination may in some cases be combinable from the combination The combination is removed and the claimed combination may be for a sub-combination or a sub-combination variant.

Similarly, although the operations are illustrated in a particular order in the figures, this should not be construed as requiring that such operations be performed in the particular order or in the order shown, or that all illustrated operations are performed. In order to achieve the desired results. In some environments, multiplex processing and parallel processing may be advantageous. Moreover, the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations, and it should be understood that the described program components and systems can generally be integrated together in a single software product. Or packaged into multiple software products. In addition, other implementations are also within the scope of the appended claims. In some cases, the actions recited in the claim can be performed in a different order and still achieve the desired result.

100‧‧‧Wireless communication system
102‧‧‧Basic Service Area (BSA)
104‧‧‧Access Point (AP)
106a‧‧‧ Station (STA)
106b‧‧‧STA
106c‧‧‧STA
106d‧‧‧STA
108‧‧‧Downlink (DL)
110‧‧‧Uplink (UL)
112‧‧‧Communication links
114‧‧‧Communication links
202‧‧‧Wireless equipment
204‧‧‧ Processor
206‧‧‧ memory
208‧‧‧Shell
210‧‧‧transmitter
212‧‧‧ Receiver
214‧‧‧ transceiver
216‧‧‧Antenna
218‧‧‧Signal Detector
220‧‧‧Digital Signal Processor (DSP)
222‧‧‧User interface
226‧‧‧ busbar system
230‧‧‧Discovery engine
302‧‧‧Discovery window (DW)
304‧‧‧ Duration
306‧‧‧Discovery period (DP)
308‧‧‧ Duration
310‧‧‧Beacon
400‧‧‧ transmission
402‧‧‧SDF
404‧‧‧SDF
408‧‧‧Ranging Establishment Attribute (RSA)
410‧‧‧RSA
415‧‧‧ Chart
500‧‧‧Ranging Establishment Attribute (RSA)
502‧‧‧Attribute identifier field
504‧‧‧ Length field
506‧‧‧Media Access Control (MAC) Address Field
508‧‧‧ mapping control field
510‧‧‧Range control field
512‧‧‧ Fine Time Measurement (FTM) parameter field
516‧‧‧ Usability interval bit map field
600‧‧‧Range control field
601‧‧‧ Availability Mapping Field
602‧‧‧Initiator/Response field
603‧‧‧Confirmation/Failure Field
604‧‧‧Reserved fields
700‧‧‧FTM parameter field
701‧‧‧Status indicator field
702‧‧‧ value field
703‧‧‧Reserved fields
704‧‧‧Short pulse number index field
705‧‧‧Short pulse duration field
706‧‧‧Minimum △FTM field
707‧‧‧Partial Time Synchronization Function (TSF) Timer Field
708‧‧‧Second reserved field
709‧‧‧ As soon as possible (ASAP) competency field
710‧‧‧ASAP field
711‧‧‧ every short pulse FTM field
712‧‧‧ third reserved field
713‧‧‧FTM format and bandwidth field
714‧‧‧Short-pulse time field
800‧‧‧ Chart
900‧‧‧FTM parameter field
905‧‧‧Short pulse duration field
906‧‧‧Min △FTM field
911‧‧‧ every short pulse FTM field
913‧‧‧FTM format and bandwidth field
915‧‧‧ reserved field
1000‧‧‧Chart
1015‧‧‧Service Mapping Field
1020‧‧‧Last mobile indicator field
1100‧‧‧Range control field
1101‧‧‧ Service mapping exists in the field
1104‧‧‧The last mobile indication exists in the field
1105‧‧‧Initiator Ranging Report Field
1106‧‧‧Location connectivity information (LCI) local field
1107‧‧‧LCI Geospatial Field
1108‧‧‧ City Location
1109‧‧‧Ranging Results Capability Field
1110‧‧‧Reserved fields
1200‧‧‧Example dialing flow
1202‧‧‧Service Discovery Frame (SDF)
1204‧‧‧SDF
1206‧‧‧Ranging FTM Agreement Measurement
1208‧‧‧Ranging FTM Agreement Measurement
1210‧‧‧Ranging FTM Agreement Measurement
1250‧‧"
1251‧‧‧Initial FTM Request (iFTMR) message
1252‧‧‧Acceptance (ACK) message
1253‧‧‧Information
1254‧‧‧Information
1255‧‧‧Message
1256‧‧‧ message
1257‧‧‧Information
1258‧‧‧Information
1300‧‧‧Example dialing flow
1302‧‧‧Service Discovery Frame (SDF)
1304‧‧‧SDF
1306‧‧‧SDF
1308‧‧‧Ranging FTM Agreement Measurement
1310‧‧‧Ranging FTM Agreement Measurement
1312‧‧‧Ranging FTM Agreement Measurement
1400‧‧‧flow chart
1402‧‧‧
1404‧‧‧Box
1500‧‧‧flow chart
1502‧‧‧ square
1504‧‧‧ square
1506‧‧‧

FIG. 1 illustrates an example of a wireless communication system.

2 illustrates a functional block diagram of a wireless device that can be employed within the wireless communication system of FIG. 1.

3 illustrates an exemplary communication isochronogram in a wireless communication system in accordance with various aspects of the present disclosure.

4 illustrates an exemplary transmission of one or more Service Discovery Frames (SDFs) or other action frames, in accordance with an exemplary embodiment.

FIG. 5 illustrates an exemplary format of a ranging setup attribute (RSA), according to an exemplary embodiment.

FIG. 6 illustrates an exemplary structure of a ranging control field of an RSA.

FIG. 7 illustrates an exemplary structure of a fine time measurement (FTM) parameter field of an RSA.

FIG. 8 is a diagram illustrating another exemplary format of a ranging setup attribute (RSA), according to an exemplary embodiment.

Figure 9 illustrates another exemplary structure of the FTM parameter field of the RSA.

FIG. 10 is a diagram illustrating another exemplary format of a ranging setup attribute (RSA), according to an exemplary embodiment.

FIG. 11 illustrates another exemplary structure of the ranging control field of the RSA.

Figure 12A is an exemplary dialing flow illustrating a ranging protocol in a Neighbor Known Network (NAN).

Figure 12B is an exemplary dialing flow illustrating an FTM agreement in a NAN.

Figure 12B is an exemplary dialing flow illustrating a ranging protocol in a NAN.

14 is a flow diagram of an exemplary method for wireless communication in a NAN.

15 is a flow diagram of another exemplary method for wireless communication in a NAN.

Domestic deposit information (please note according to the order of the depository, date, number)

Foreign deposit information (please note in the order of country, organization, date, number)

(Please change the page separately) No

302‧‧‧Discovery window (DW)

304‧‧‧ Duration

306‧‧‧Discovery period (DP)

308‧‧‧ Duration

310‧‧‧Beacon

Claims (43)

A method for wireless communication in a neighbor aware network (NAN), comprising the steps of: transmitting, by a first device, a first service discovery frame (SDF) to a second device during a discovery window or The other action frame, the first SDF or other action frame includes ranging information for performing a ranging protocol; and the ranging device executes the ranging protocol according to the ranging information. The method of claim 1, wherein the first SDF or other action frame includes an attribute including ranging information for performing the ranging protocol and an indication of a time period other than the discovery window. And wherein performing the ranging protocol includes the step of performing the ranging protocol during the time period indicated by the first SDF or other action frame. The method of claim 2, wherein the attribute comprises a MAC address field for identifying a Media Access Control (MAC) address of a device performing the ranging protocol, for indicating a channel and mapping a mapping control field for controlling availability of information, a ranging control field for indicating ranging parameters, a fine time measurement (FTM) parameter field for indicating FTM parameters, and indicating the time period An availability interval bit map field. The method of claim 3, wherein the attribute further comprises a service mapping field and a last movement indication field. The method of claim 4, wherein the service mapping field indicates whether ranging is required for a service attribute in the first SDF or other action frame. The method of claim 5, wherein indicating whether ranging is required comprises the step of setting a bit in the service mapping field such that a bit position of the bit indicates one of the service attributes requiring ranging position. The method of claim 3, wherein the ranging control field comprises an availability mapping field, an initiator/responder field, a confirmation/failure field, and a reserved field. The method of claim 7, wherein the availability mapping field indicates whether the availability interval bit mapping field is present. The method of claim 8, wherein the initiator/responder field indicates whether the first device is an initiator or a responder. The method of claim 8, wherein the confirmation/failure field indicates whether a ranging agreement is in progress, successful or failed. The method of claim 7, wherein the ranging control field further comprises a service mapping presence field, a last movement indication presence field, an initiator ranging report field, and a ranging result capability field. The method of claim 11, wherein the service mapping presence field indicates whether a service mapping field exists. The method of claim 12, wherein the performing the ranging protocol comprises the step of executing the ranging protocol without any service in the absence of the service mapping field. The method of claim 11, wherein the last move indicates that the presence field indicates whether a last move indication field exists. The method of claim 11, wherein the initiator ranging report field indicates whether the ranging result is requested by a responder device or will be transmitted to the responder device. The method of claim 11, wherein the ranging result capability field indicates whether the first device is capable of providing a ranging result to other devices. The method of claim 3, wherein the FTM parameter field comprises a short pulse duration field, a minimum ΔFTM field, a short pulse FTM field, and an FTM format and bandwidth field. The method of claim 1, wherein the ranging protocol comprises a fine time measurement (FTM) protocol. The method of claim 1, further comprising the steps of: receiving a second SDF in response to the first SDF or other action frame, the second SDF or other action frame including ranging information and the discovery window An indication of a time period other than that for performing a ranging protocol based on the ranging information of the second SDF or other action frame. The method of claim 19, wherein the time period of the second SDF or other action frame is different from the time period of the first SDF or other action frame. The method of claim 19, wherein the ranging information of the second SDF or other action frame is different from the ranging information of the first SDF or other action frames. The method of claim 19, wherein the second SDF or other action frame further comprises a determination of the ranging information for the first SDF or other action frame and the indicated time period. The method of claim 2, wherein the attribute is a ranging setup attribute. A method for wireless communication in a neighbor aware network (NAN), comprising the steps of: receiving a first service discovery frame (SDF) from a second device during a discovery window at a first device Or the other action frame, the first SDF or other action frame includes ranging information; and the first device transmits to the first device in response to the first SDF or other action frame during the discovery window a second SDF or other action frame, the second SDF or other action frame includes ranging information and an indication of a time period other than the discovery window for performing a ranging protocol according to the ranging information And performing the ranging protocol during the time period indicated by the first device in the second SDF or other action frame. The method of claim 24, wherein at least one of the first and second SDF or other action frames includes an attribute containing the ranging information. The method of claim 25, wherein the attribute comprises a MAC address field for identifying a Media Access Control (MAC) address of a device performing the ranging protocol, for indicating a channel and mapping a mapping control field for controlling availability of information, a ranging control field for indicating ranging parameters, a fine time measurement (FTM) parameter field for indicating FTM parameters, and indicating the time period An availability interval bit map field. The method of claim 26, wherein the ranging control field comprises an availability mapping field, an initiator field, a confirmation/failure field, and a reserved field. The method of claim 27, wherein the availability mapping field indicates whether the availability interval bit mapping field is present. The method of claim 27, wherein the initiator field indicates whether the first device is an initiator or a responder. The method of claim 27, wherein the confirmation/failure field indicates whether a ranging agreement is in progress, successful or failed. The method of claim 26, wherein the FTM parameter field comprises a short pulse duration field, a minimum ΔFTM field, a short burst FTM field, and an FTM format and bandwidth field. The method of claim 24, wherein the ranging protocol comprises a fine time measurement (FTM) protocol. The method of claim 24, further comprising the steps of: receiving a third SDF or other action frame in response to the second SDF or other action frame, the third SDF or other action frame including ranging information And an indication of a second time period other than the discovery window for performing a ranging protocol according to the ranging information of the third SDF or other action frame. The method of claim 33, wherein the second time period of the third SDF or other action frame is different from the time period of the second SDF or other action frame. The method of claim 33, wherein the ranging information of the third SDF or other action frame is different from the ranging information of the second SDF or other action frame. The method of claim 33, wherein the third SDF or other action frame further comprises a determination of the ranging information for the second SDF or other action frame and the indicated time period. The method of claim 25, wherein the attribute is a ranging setup attribute. An apparatus configured for wireless communication, comprising: a transmitter configured to transmit a first service discovery frame (SDF) or other action frame to a second device during a discovery window, the An SDF or other action frame includes ranging information for performing a ranging protocol; and a processor configured to perform the ranging protocol based on the ranging information. An apparatus configured for wireless communication, comprising: a receiver configured to receive a first service discovery frame (SDF) or other action frame from a second device during a discovery window, The first SDF or other action frame includes ranging information; a transmitter configured to transmit a second service discovery frame (SDF) or other action frame to the second device during the discovery window, The second SDF or other action frame includes ranging information and an indication of a time period other than the discovery window for performing a ranging protocol according to the ranging information; and a processor configured to The ranging protocol is executed during the time period indicated by the second SDF or other action frame. An apparatus for wireless communication, comprising: means for transmitting, by a first device, a first service discovery frame (SDF) or other action frame to a second device during a discovery window, the first The SDF or other action frame includes ranging information for performing a ranging protocol; and means for the first device to perform the ranging protocol based on the ranging information. An apparatus for wireless communication, comprising: means for receiving a first service discovery frame (SDF) or other action frame from a second device during a discovery window at a first device, The first SDF or other action frame includes ranging information; a component for transmitting, by the first device, a second service discovery frame (SDF) or other action frame to the second device during a discovery window, The second SDF or other action frame includes ranging information and an indication of a time period other than the discovery window for performing a ranging protocol according to the ranging information; and for being used by the first device The component of the ranging protocol is executed during the time period indicated by the second SDF or other action frame. A non-transitory computer readable medium comprising code, the code, when executed, causing a device to perform a method, the method comprising the steps of: transmitting, by a first device, a second device during a discovery window a first service discovery frame (SDF) or other action frame, the first SDF or other action frame includes ranging information for performing a ranging protocol; and the first device performs the ranging information according to the ranging information Ranging agreement. A non-transitory computer readable medium comprising code that, when executed, causes a device to perform a method, the method comprising the steps of: receiving a second device during a discovery window at a first device a first service discovery frame (SDF) or other action frame, the first SDF or other action frame includes ranging information; and the first device transmits a first message to the second device during the discovery window a second service discovery frame (SDF) or other action frame, the second SDF or other action frame includes ranging information and an indication of a time period other than the discovery window for performing according to the ranging information a ranging protocol; and performing the ranging protocol during the time period indicated by the first device in the second SDF or other action frame.